(require 'magit)
(defvar magit-find-file-hook nil)
(add-hook 'magit-find-file-hook #'magit-blob-mode)
(defun magit-find-file (rev file)
"View FILE from REV.
Switch to a buffer visiting blob REV:FILE, creating one if none
already exists. If prior to calling this command the current
buffer and/or cursor position is about the same file, then go
to the line and column corresponding to that location."
(interactive (magit-find-file-read-args "Find file"))
(magit-find-file--internal rev file #'pop-to-buffer-same-window))
(defun magit-find-file-other-window (rev file)
"View FILE from REV, in another window.
Switch to a buffer visiting blob REV:FILE, creating one if none
already exists. If prior to calling this command the current
buffer and/or cursor position is about the same file, then go to
the line and column corresponding to that location."
(interactive (magit-find-file-read-args "Find file in other window"))
(magit-find-file--internal rev file #'switch-to-buffer-other-window))
(defun magit-find-file-other-frame (rev file)
"View FILE from REV, in another frame.
Switch to a buffer visiting blob REV:FILE, creating one if none
already exists. If prior to calling this command the current
buffer and/or cursor position is about the same file, then go to
the line and column corresponding to that location."
(interactive (magit-find-file-read-args "Find file in other frame"))
(magit-find-file--internal rev file #'switch-to-buffer-other-frame))
(defun magit-find-file-read-args (prompt)
(let ((pseudo-revs '("{worktree}" "{index}")))
(if-let ((rev (magit-completing-read "Find file from revision"
(append pseudo-revs
(magit-list-refnames nil t))
nil nil nil 'magit-revision-history
(or (magit-branch-or-commit-at-point)
(magit-get-current-branch)))))
(list rev (magit-read-file-from-rev (if (member rev pseudo-revs)
"HEAD"
rev)
prompt))
(user-error "Nothing selected"))))
(defun magit-find-file--internal (rev file fn)
(let ((buf (magit-find-file-noselect rev file))
line col)
(when-let ((visited-file (magit-file-relative-name)))
(setq line (line-number-at-pos))
(setq col (current-column))
(cond
((not (equal visited-file file)))
((equal magit-buffer-revision rev))
((equal rev "{worktree}")
(setq line (magit-diff-visit--offset file magit-buffer-revision line)))
((equal rev "{index}")
(setq line (magit-diff-visit--offset file nil line)))
(magit-buffer-revision
(setq line (magit-diff-visit--offset
file (concat magit-buffer-revision ".." rev) line)))
(t
(setq line (magit-diff-visit--offset file (list "-R" rev) line)))))
(funcall fn buf)
(when line
(with-current-buffer buf
(widen)
(goto-char (point-min))
(forward-line (1- line))
(move-to-column col)))
buf))
(defun magit-find-file-noselect (rev file)
"Read FILE from REV into a buffer and return the buffer.
REV is a revision or one of \"{worktree}\" or \"{index}\".
FILE must be relative to the top directory of the repository."
(magit-find-file-noselect-1 rev file))
(defun magit-find-file-noselect-1 (rev file &optional revert)
"Read FILE from REV into a buffer and return the buffer.
REV is a revision or one of \"{worktree}\" or \"{index}\".
FILE must be relative to the top directory of the repository.
Non-nil REVERT means to revert the buffer. If `ask-revert',
then only after asking. A non-nil value for REVERT is ignored if REV is
\"{worktree}\"."
(if (equal rev "{worktree}")
(find-file-noselect (expand-file-name file (magit-toplevel)))
(let ((topdir (magit-toplevel)))
(when (file-name-absolute-p file)
(setq file (file-relative-name file topdir)))
(with-current-buffer (magit-get-revision-buffer-create rev file)
(when (or (not magit-buffer-file-name)
(if (eq revert 'ask-revert)
(y-or-n-p (format "%s already exists; revert it? "
(buffer-name))))
revert)
(setq magit-buffer-revision
(if (equal rev "{index}")
"{index}"
(magit-rev-format "%H" rev)))
(setq magit-buffer-refname rev)
(setq magit-buffer-file-name (expand-file-name file topdir))
(setq default-directory
(let ((dir (file-name-directory magit-buffer-file-name)))
(if (file-exists-p dir) dir topdir)))
(setq-local revert-buffer-function #'magit-revert-rev-file-buffer)
(revert-buffer t t)
(run-hooks (if (equal rev "{index}")
'magit-find-index-hook
'magit-find-file-hook)))
(current-buffer)))))
(defun magit-get-revision-buffer-create (rev file)
(magit-get-revision-buffer rev file t))
(defun magit-get-revision-buffer (rev file &optional create)
(funcall (if create #'get-buffer-create #'get-buffer)
(format "%s.~%s~" file (subst-char-in-string ?/ ?_ rev))))
(defun magit-revert-rev-file-buffer (_ignore-auto noconfirm)
(when (or noconfirm
(and (not (buffer-modified-p))
(catch 'found
(dolist (regexp revert-without-query)
(when (string-match regexp magit-buffer-file-name)
(throw 'found t)))))
(yes-or-no-p (format "Revert buffer from Git %s? "
(if (equal magit-buffer-refname "{index}")
"index"
(concat "revision " magit-buffer-refname)))))
(let* ((inhibit-read-only t)
(default-directory (magit-toplevel))
(file (file-relative-name magit-buffer-file-name))
(coding-system-for-read (or coding-system-for-read 'undecided)))
(erase-buffer)
(magit-git-insert "cat-file" "-p"
(if (equal magit-buffer-refname "{index}")
(concat ":" file)
(concat magit-buffer-refname ":" file)))
(setq buffer-file-coding-system last-coding-system-used))
(let ((buffer-file-name magit-buffer-file-name)
(after-change-major-mode-hook
(remq 'global-diff-hl-mode-enable-in-buffers
after-change-major-mode-hook)))
(delay-mode-hooks
(normal-mode t)))
(setq buffer-read-only t)
(set-buffer-modified-p nil)
(goto-char (point-min))))
(defvar magit-find-index-hook nil)
(defun magit-find-file-index-noselect (file &optional revert)
"Read FILE from the index into a buffer and return the buffer.
FILE must to be relative to the top directory of the repository."
(magit-find-file-noselect-1 "{index}" file (or revert 'ask-revert)))
(defun magit-update-index ()
"Update the index with the contents of the current buffer.
The current buffer has to be visiting a file in the index, which
is done using `magit-find-index-noselect'."
(interactive)
(let ((file (magit-file-relative-name)))
(unless (equal magit-buffer-refname "{index}")
(user-error "%s isn't visiting the index" file))
(if (y-or-n-p (format "Update index with contents of %s" (buffer-name)))
(let ((index (make-temp-name (magit-git-dir "magit-update-index-")))
(buffer (current-buffer)))
(when magit-wip-before-change-mode
(magit-wip-commit-before-change (list file) " before un-/stage"))
(unwind-protect
(progn
(let ((coding-system-for-write buffer-file-coding-system))
(with-temp-file index
(insert-buffer-substring buffer)))
(magit-with-toplevel
(magit-call-git
"update-index" "--cacheinfo"
(substring (magit-git-string "ls-files" "-s" file)
0 6)
(magit-git-string "hash-object" "-t" "blob" "-w"
(concat "--path=" file)
"--" (magit-convert-filename-for-git index))
file)))
(ignore-errors (delete-file index)))
(set-buffer-modified-p nil)
(when magit-wip-after-apply-mode
(magit-wip-commit-after-apply (list file) " after un-/stage")))
(message "Abort")))
(--when-let (magit-get-mode-buffer 'magit-status-mode)
(with-current-buffer it (magit-refresh)))
t)
(defun magit-find-git-config-file (filename &optional wildcards)
"Edit a file located in the current repository's git directory.
When \".git\", located at the root of the working tree, is a
regular file, then that makes it cumbersome to open a file
located in the actual git directory.
This command is like `find-file', except that it temporarily
binds `default-directory' to the actual git directory, while
reading the FILENAME."
(interactive
(let ((default-directory (magit-git-dir)))
(find-file-read-args "Find file: "
(confirm-nonexistent-file-or-buffer))))
(find-file filename wildcards))
(defun magit-find-git-config-file-other-window (filename &optional wildcards)
"Edit a file located in the current repo's git directory, in another window.
When \".git\", located at the root of the working tree, is a
regular file, then that makes it cumbersome to open a file
located in the actual git directory.
This command is like `find-file-other-window', except that it
temporarily binds `default-directory' to the actual git
directory, while reading the FILENAME."
(interactive
(let ((default-directory (magit-git-dir)))
(find-file-read-args "Find file in other window: "
(confirm-nonexistent-file-or-buffer))))
(find-file-other-window filename wildcards))
(defun magit-find-git-config-file-other-frame (filename &optional wildcards)
"Edit a file located in the current repo's git directory, in another frame.
When \".git\", located at the root of the working tree, is a
regular file, then that makes it cumbersome to open a file
located in the actual git directory.
This command is like `find-file-other-frame', except that it
temporarily binds `default-directory' to the actual git
directory, while reading the FILENAME."
(interactive
(let ((default-directory (magit-git-dir)))
(find-file-read-args "Find file in other frame: "
(confirm-nonexistent-file-or-buffer))))
(find-file-other-frame filename wildcards))
(transient-define-prefix magit-file-dispatch ()
"Invoke a Magit command that acts on the visited file.
When invoked outside a file-visiting buffer, then fall back
to `magit-dispatch'."
:info-manual "(magit) Minor Mode for Buffers Visiting Files"
["Actions"
[("s" "Stage" magit-stage-file)
("u" "Unstage" magit-unstage-file)
("c" "Commit" magit-commit)
("e" "Edit line" magit-edit-line-commit)]
[("D" "Diff..." magit-diff)
("d" "Diff" magit-diff-buffer-file)
("g" "Status" magit-status-here)]
[("L" "Log..." magit-log)
("l" "Log" magit-log-buffer-file)
("t" "Trace" magit-log-trace-definition)
(7 "M" "Merged" magit-log-merged)]
[("B" "Blame..." magit-blame)
("b" "Blame" magit-blame-addition)
("r" "...removal" magit-blame-removal)
("f" "...reverse" magit-blame-reverse)
("m" "Blame echo" magit-blame-echo)
("q" "Quit blame" magit-blame-quit)]
[("p" "Prev blob" magit-blob-previous)
("n" "Next blob" magit-blob-next)
("v" "Goto blob" magit-find-file)
("V" "Goto file" magit-blob-visit-file)]
[(5 "C-c r" "Rename file" magit-file-rename)
(5 "C-c d" "Delete file" magit-file-delete)
(5 "C-c u" "Untrack file" magit-file-untrack)
(5 "C-c c" "Checkout file" magit-file-checkout)]]
(interactive)
(transient-setup
(if (magit-file-relative-name)
'magit-file-dispatch
'magit-dispatch)))
(defvar-keymap magit-blob-mode-map
:doc "Keymap for `magit-blob-mode'."
"p" #'magit-blob-previous
"n" #'magit-blob-next
"b" #'magit-blame-addition
"r" #'magit-blame-removal
"f" #'magit-blame-reverse
"q" #'magit-kill-this-buffer)
(define-minor-mode magit-blob-mode
"Enable some Magit features in blob-visiting buffers.
Currently this only adds the following key bindings.
\n\\{magit-blob-mode-map}"
:package-version '(magit . "2.3.0"))
(defun magit-blob-next ()
"Visit the next blob which modified the current file."
(interactive)
(if magit-buffer-file-name
(magit-blob-visit (or (magit-blob-successor magit-buffer-revision
magit-buffer-file-name)
magit-buffer-file-name))
(if (buffer-file-name (buffer-base-buffer))
(user-error "You have reached the end of time")
(user-error "Buffer isn't visiting a file or blob"))))
(defun magit-blob-previous ()
"Visit the previous blob which modified the current file."
(interactive)
(if-let ((file (or magit-buffer-file-name
(buffer-file-name (buffer-base-buffer)))))
(--if-let (magit-blob-ancestor magit-buffer-revision file)
(magit-blob-visit it)
(user-error "You have reached the beginning of time"))
(user-error "Buffer isn't visiting a file or blob")))
(defun magit-blob-visit-file ()
"View the file from the worktree corresponding to the current blob.
When visiting a blob or the version from the index, then go to
the same location in the respective file in the working tree."
(interactive)
(if-let ((file (magit-file-relative-name)))
(magit-find-file--internal "{worktree}" file #'pop-to-buffer-same-window)
(user-error "Not visiting a blob")))
(defun magit-blob-visit (blob-or-file)
(if (stringp blob-or-file)
(find-file blob-or-file)
(pcase-let ((`(,rev ,file) blob-or-file))
(magit-find-file rev file)
(apply #'message "%s (%s %s ago)"
(magit-rev-format "%s" rev)
(magit--age (magit-rev-format "%ct" rev))))))
(defun magit-blob-ancestor (rev file)
(let ((lines (magit-with-toplevel
(magit-git-lines "log" "-2" "--format=%H" "--name-only"
"--follow" (or rev "HEAD") "--" file))))
(if rev (cddr lines) (butlast lines 2))))
(defun magit-blob-successor (rev file)
(let ((lines (magit-with-toplevel
(magit-git-lines "log" "--format=%H" "--name-only" "--follow"
"HEAD" "--" file))))
(catch 'found
(while lines
(if (equal (nth 2 lines) rev)
(throw 'found (list (nth 0 lines) (nth 1 lines)))
(setq lines (nthcdr 2 lines)))))))
(defun magit-file-rename (file newname)
"Rename or move FILE to NEWNAME.
NEWNAME may be a file or directory name. If FILE isn't tracked in
Git, fallback to using `rename-file'."
(interactive
(let* ((file (magit-read-file "Rename file"))
(path (expand-file-name file (magit-toplevel))))
(list path (expand-file-name
(read-file-name (format "Move %s to destination: " file)
(file-name-directory path))))))
(let ((oldbuf (get-file-buffer file))
(dstdir (file-name-directory newname))
(dstfile (if (directory-name-p newname)
(concat newname (file-name-nondirectory file))
newname)))
(when (and oldbuf (buffer-modified-p oldbuf))
(user-error "Save %s before moving it" file))
(when (file-exists-p dstfile)
(user-error "%s already exists" dstfile))
(unless (file-exists-p dstdir)
(user-error "Destination directory %s does not exist" dstdir))
(if (magit-file-tracked-p (magit-convert-filename-for-git file))
(magit-call-git "mv"
(magit-convert-filename-for-git file)
(magit-convert-filename-for-git newname))
(rename-file file newname current-prefix-arg))
(when oldbuf
(with-current-buffer oldbuf
(let ((buffer-read-only buffer-read-only))
(set-visited-file-name dstfile nil t))
(if (fboundp 'vc-refresh-state)
(vc-refresh-state)
(with-no-warnings
(vc-find-file-hook))))))
(magit-refresh))
(defun magit-file-untrack (files &optional force)
"Untrack the selected FILES or one file read in the minibuffer.
With a prefix argument FORCE do so even when the files have
staged as well as unstaged changes."
(interactive (list (or (--if-let (magit-region-values 'file t)
(progn
(unless (magit-file-tracked-p (car it))
(user-error "Already untracked"))
(magit-confirm-files 'untrack it "Untrack"))
(list (magit-read-tracked-file "Untrack file"))))
current-prefix-arg))
(magit-with-toplevel
(magit-run-git "rm" "--cached" (and force "--force") "--" files)))
(defun magit-file-delete (files &optional force)
"Delete the selected FILES or one file read in the minibuffer.
With a prefix argument FORCE do so even when the files have
uncommitted changes. When the files aren't being tracked in
Git, then fallback to using `delete-file'."
(interactive (list (--if-let (magit-region-values 'file t)
(magit-confirm-files 'delete it "Delete")
(list (magit-read-file "Delete file")))
current-prefix-arg))
(if (magit-file-tracked-p (car files))
(magit-call-git "rm" (and force "--force") "--" files)
(let ((topdir (magit-toplevel)))
(dolist (file files)
(delete-file (expand-file-name file topdir) t))))
(magit-refresh))
(defun magit-file-checkout (rev file)
"Checkout FILE from REV."
(interactive
(let ((rev (magit-read-branch-or-commit
"Checkout from revision" magit-buffer-revision)))
(list rev (magit-read-file-from-rev rev "Checkout file"))))
(magit-with-toplevel
(magit-run-git "checkout" rev "--" file)))
(defvar magit-read-file-hist nil)
(defun magit-read-file-from-rev (rev prompt &optional default)
(let ((files (magit-revision-files rev)))
(magit-completing-read
prompt files nil t nil 'magit-read-file-hist
(car (member (or default (magit-current-file)) files)))))
(defun magit-read-file (prompt &optional tracked-only)
(let ((choices (nconc (magit-list-files)
(unless tracked-only (magit-untracked-files)))))
(magit-completing-read
prompt choices nil t nil nil
(car (member (or (magit-section-value-if '(file submodule))
(magit-file-relative-name nil tracked-only))
choices)))))
(defun magit-read-tracked-file (prompt)
(magit-read-file prompt t))
(defun magit-read-unmerged-file (&optional prompt)
(let ((current (magit-current-file))
(unmerged (magit-unmerged-files)))
(unless unmerged
(user-error "There are no unresolved conflicts"))
(magit-completing-read (or prompt "Resolve file")
unmerged nil t nil nil
(car (member current unmerged)))))
(defun magit-read-file-choice (prompt files &optional error default)
"Read file from FILES.
If FILES has only one member, return that instead of prompting.
If FILES has no members, give a user error. ERROR can be given
to provide a more informative error.
If DEFAULT is non-nil, use this as the default value instead of
`magit-current-file'."
(pcase (length files)
(0 (user-error (or error "No file choices")))
(1 (car files))
(_ (magit-completing-read
prompt files nil t nil 'magit-read-file-hist
(car (member (or default (magit-current-file)) files))))))
(defun magit-read-changed-file (rev-or-range prompt &optional default)
(magit-read-file-choice
prompt
(magit-changed-files rev-or-range)
default
(concat "No file changed in " rev-or-range)))
(provide 'magit-files)